Kite power prototype takes off in the Netherlands - video

According to Roland Schmehl at Delft University, kite power could provide a
cheaper, more environmentally acceptable alternative to wind turbines. The prototype 'kite sail' in the film measures only 25 square metres but can generate 20 kilowatts of power in winds of 70-90 kilometres per hour – enough to power 40 homes. One of the advantages compared with wind turbines is that the wind blows more steadily at the heights at which the kite flies